Roof motor hydraulic pump assembly question

S

Sev

Member
Hi all,
Apologies in advance for this question, I’ve read/searched through various threads and posts, but, can’t seem to find any pictures of the hydraulic pump disassembly detailing the pump side rotor parts Individual components. (2005 E85)

Namely the machined rotor containing 3 x individual pin pistons and possibly a ‘C’ shaped washer/spacer that may sit above the rotor

I relocated my motor/pump this week and when I split the pump and motor apart, to investigate ‘no pressure’ it kind of ‘disassembled’ itself into a tobacco tin I had beneath it, along with several other unrelated components. :roll:

The bottom motor part of the assembly is fine and the drive rotor of that is properly attached.

But, in the pump top section, is there a ‘C’ shaped washer/spacer that goes on the central shaft before you fit the rotor with the Integral three small pistons ?

I know it sounds a bit convoluted, but those who have done this job may be familiar with the individual component parts and have further pictures , or just simply, confirm that there should be that C shaped washer/spacer installed first on the pump side central shaft.

Many thanks for any advice/pictures offered

Paul
Solihull
 
Moderators, I have now fixed/sorted my pump and motor .

Could you now please delete this topic ?

I have tried to delete this, but am unable to do so
 
Hi [ref]Sev[/ref],
Rather than delete this topic, would it not be more useful to the forum if you could explain what you did to solve it, and which bit went where?
 
I’d agree, chances are if you had the problem then someone else has too! :)
 
It turns out , that the machined rotor with integral piston pins goes straight onto the shaft with no spacer or washer.

When my motor ‘disassembled’ itself into the tobacco tin, it just so happens there was a C shaped washer in the tin, that was exactly the same diameter as the pump central shaft assembly.

I’d stripped the pump/motor assembly on Saturday after relocating it and topping up the reservoir , but, the roof still did not operate.

So I was wondering if I’d missed a part out.

Today after posting my orIginal request for info, I eventually removed the pump/motor assembly from the car (after using a dremel to cut a slot on one of the Bowden housing screws that had rounded off) ....once I’d removed the whole assembly, I split it again and worked out that the pistons inside the rotor could not operate if there was a washer or spacer fitted.

So I rebuilt it and connected the motor up to a 12v source.
Initially, I could only get pressure from one port even after reversing the polarity and motor direction.

After a few more blasts of contact cleaner and WD40 and a few operations of the pressure relief button, I got pressure ‘spurts’ from both ‘raise’ and ‘lower’ ports.

Refitted the whole lot ....and hey presto! ...roof raises and lowers rapidly and with no hesitation.

Job’s a good ‘un ....and least part of the ‘Lockdown’ was not entirely wasted.

Hope this helps someone/somewhere at some point.

Paul
Solihull.
 
P.S. Enuff Zed.

Loved the Panavia Tornado, I have many mates who have either flown or worked on them at various points In the past.

Not me, I have been a civilian aircraft engineer for the past 33 years, but, my interest has always been in Military fast jets

Primarily, the EE Lightning, Hawker Hunter, Avro Vulcan and McD F-4 Phantoms of my youth.
 
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